linux-kernel - Re: [PATCH] mountinfo: implement show

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Message-ID: <20160506174232.GC7110@mtj.duckdns.org>
Date:	Fri, 6 May 2016 13:42:32 -0400
From:	Tejun Heo <tj@...nel.org>
To:	"Serge E. Hallyn" <serge@...lyn.com>
Cc:	"Michael Kerrisk (man-pages)" <mtk.manpages@...il.com>,
	"Serge E. Hallyn" <serge.hallyn@...ntu.com>,
	linux-kernel@...r.kernel.org, linux-api@...r.kernel.org,
	containers@...ts.linux-foundation.org, hannes@...xchg.org,
	ebiederm@...ssion.com, gregkh@...uxfoundation.org,
	cgroups@...r.kernel.org, akpm@...ux-foundation.org
Subject: Re: [PATCH] mountinfo: implement show_path for kernfs and cgroup

Hello,

On Fri, May 06, 2016 at 12:33:56PM -0500, Serge E. Hallyn wrote:
> Right.  So in particular, docker wants to do something like:
> 
> bindpath=`grep freezer /proc/self/mountinfo | tail -n 1 | awk '{ print $4 }'`
> mountpoint=`grep freezer /proc/self/mountinfo | tail -n 1 | awk '{ print $5 }'`
> mycg=`awk -F: '/freezer/ { print $3 }' /proc/self/cgroup`
> cat ${mountpoint}/${bindpath}/${mycg}/cgroup.procs
> 
> and see its own task.

Can you please make the example more concrete?  e.g. Use actual paths
and show what they show now vs. what they should.

Thanks.

-- 
tejun